Smart Management of Green City: Digital Twin Underground Integrated Pipe Gallery Platform

Preface

In 1833, the world's first integrated pipe gallery for municipal pipelines was built in Paris, France. In 1994, the Shanghai Municipal Government planned to build the first integrated pipe gallery with the largest scale and the longest distance in the mainland—the integrated pipe gallery on Zhangyang Road in Pudong New Area. So far, the underground comprehensive pipe gallery has evolved into the "lifeline" of urban functions and is the guarantee of people's lives.

When we are walking on the wide avenues and roaming in the flat green space, at 7 to 8 meters underground that we can't see, the urban "arteries" are continuously delivering water, electricity, gas and communication signals that are closely related to life for citizens, ensuring that The city operates normally, safely and efficiently.

effect display

Hightopo adopts lightweight 3D modeling technology to simulate the internal scene of the integrated pipe gallery with high simulation. Based on the 3D scene and supplemented by the 2D data panel, it digitally displays the urban underground tunnel space and understands electricity, communication, gas, heating, water supply and drainage, etc. The laying of various engineering pipelines, and the inspection port, hoisting port and monitoring system are viewed on the large visualization screen of Tupu.

The smart management web platform of underground integrated pipe gallery uses 3D visualization and virtual simulation technology to simulate and reproduce the physical elements and information system of the underground integrated pipe gallery with high precision, focusing on the key aspects of perception, transmission, data, platform and application, and presentation. Technology research and its application to realize the safe operation and intelligent management and control of urban underground comprehensive pipe gallery.

System Analysis

Comprehensive pipe gallery

Hightopo's large visual screen shows the laying of the pipe gallery in the trunk line of Lujiazui. The overall length of the pipe gallery is 10.14 km and there are 11 collection points. The integrated pipe gallery relies on the integrated operation and management platform of the smart pipe gallery, and monitors the environmental parameters and equipment status inside the pipe gallery in real time through intelligent equipment such as infrared radiation alarms, sensors, and personnel positioning systems arranged in the pipe gallery, and handles the pipe gallery in time. Internal alarm information and remote scheduling work.

In terms of systems, the design of the auxiliary system of the integrated pipe gallery includes not only firefighting, ventilation, power supply, lighting, environment and equipment monitoring, security and other systems, but also intelligent evacuation, personnel positioning, automatic fire alarm and flammable gas detection and alarm, and body drainage. etc. system.

Equipment Statistics

Through the Hightopo underground integrated pipe gallery intelligent management web platform, the staff can clearly see the statistics of operation and maintenance, maintenance, fault repair and other conditions in each cabin with a click of a mouse. Display the ratio of offline equipment, online equipment, alarm equipment, and equipment to be repaired with a ring diagram. If there are too many offline equipment, employees should be sent to the integrated pipe gallery for on-site inspection.

case

The voltage, current, person in charge and contact information of 4 cabins, including power 1 cabin, electric power cabin 2, integrated cabin and gas cabin, are displayed, which is convenient for timely communication and handling in case of problems.

Trunk line integrated pipe gallery: It is used to accommodate the integrated pipe gallery constructed by independent subdivision for the main pipelines of the city.

Branch line integrated pipe gallery: It is used to accommodate the integrated pipe gallery constructed with single or double cabins for urban distribution engineering pipelines.

Cable duct gallery: It is constructed by shallow buried trench, with openable cover plate but its internal space cannot meet the normal passage requirements of personnel, and is used for accommodating power cables and communication cables.

Warning information

Hightopo visualization system collects information such as pipe gallery power supply system, smoke detector, drainage and smoke exhaust system, ambient temperature, humidity, combustible gas detection, access control, intrusion detection, video and other information. Distribute work orders for tracking closed-loop processing.

The alarm data of pipeline damage, personnel abnormality, environmental abnormality, and equipment abnormality within 7 days is displayed in a ring diagram, so that the administrator can clearly understand the composition of the alarm. The alarm list dynamically displays the alarm level and fault address, which is convenient for statistics of accident-prone places.

Work Order Statistics

Inspection work orders, maintenance work orders, hot work, pipe gallery visits, pipeline access, and maintenance work orders are counted separately. The cumulative number of work orders for 30 days is displayed, and a line graph is used to display the statistics of historical work orders.

The collection of work orders is conducive to the statistics of problems, and the location and time of frequent accidents can be checked later, and preventive measures can be taken in advance to avoid the occurrence of similar problems.

Environmental Monitoring

HT visualization uses rich charts, graphics and design elements to display relatively complex and abstract data in a more intuitive and understandable form in a visual way, which is convenient for the efficient management of pipe gallery operation and maintenance personnel, and does not need to go underground through complex forms such as manual accounting. Operation and maintenance analysis of integrated pipe gallery.

The large HT visualization screen uses various charts to display various health indicators of the "underground lifeline" in real time: oxygen, temperature, humidity, ventilation, and the monitoring platform will automatically alarm if any index in the power cabin, gas cabin, or comprehensive cabin is abnormal. If the oxygen content in a certain area is too low, the large visual screen of Tupu combined with GIS can quickly locate the problem point and arrange personnel to rescue in time. The combination of Hightopo and GIS can effectively shorten the rescue time.

There will be some toxic and harmful gases in the pipe gallery. According to the chemical properties of the gases, they can be divided into two categories: combustible gases and toxic gases. The main components of the flammable gas in the pipe gallery are methane and volatile organic compounds, and the toxic gases are mainly hydrogen sulfide, carbon monoxide, sulfur dioxide, nitrogen oxides, etc., so it is necessary to install and use detection instruments in the pipe gallery to monitor the gas to ensure the safety of personnel. The first choice for the selection of gas detection instruments is to determine the type and concentration range of the gas detected by the pipe gallery.

The underground pipe gallery environmental monitoring solution is mainly composed of temperature and humidity sensors, oxygen sensors, carbon monoxide sensors, carbon dioxide sensors, hydrogen sulfide, methane sensors, pressure sensors, liquid level sensors, water immersion sensors, smoke alarms, environmental monitoring hosts and cloud platforms. . Connect to the environmental monitoring host and upload it to the cloud platform through GPRS/4G to achieve 24-hour uninterrupted online monitoring, and support functions such as online alarm, remote viewing of data, and historical data curve viewing.

When it is detected that the parameter of a certain gas exceeds the preset alarm value, an audible and visual alarm signal will be issued through the HT large screen to remind the operation and maintenance personnel to pay attention to the safety of the operation. When the system occurs emergency startup, failure and other events, the controller can automatically record the event type, event time, event area and event details.

The core of the safe operation and intelligent management and control of urban underground comprehensive pipe gallery lies in data and application. The data of urban underground comprehensive pipe gallery is typical multi-source heterogeneous data with different data sources, including real-time environmental monitoring data, video monitoring data, and management data. The main body data of the gallery, as well as the spatial location data of the pipe gallery and its equipment and personnel, and the text data of the emergency plan, etc. For this reason, the integration, linkage and fusion of multi-source data are the core of the safe operation and intelligent management and control of the pipe gallery.

Pipe gallery internal system

Regardless of the failure of the carrying pipeline or the failure of its own auxiliary equipment, some functions may be paralyzed. Therefore, various on-site sensors need to be set up to monitor and control the operation of the internal facilities of the pipe gallery when building an integrated pipe gallery. Usually include: the ground attached to the pipe gallery and the internal power supply system, lighting system, fire protection system, drainage and smoke exhaust system, patrol, etc.

Ventilation system

The integrated pipe gallery is a closed underground structure and must be equipped with a ventilation system. Ensure that the heat emitted by the cables in the pipe gallery can be discharged in time and provide the maintenance personnel with an appropriate amount of fresh air. When a fire occurs in the pipe gallery, it can help control the spread of the fire and evacuate people. Common pipe gallery ventilation methods are divided into natural ventilation and mechanical ventilation. Mechanical ventilation includes mechanical exhaust and mechanical intake. If the integrated pipe gallery accommodates conventional pipelines such as electricity, communication, and water supply, natural and mechanical ventilation methods can be used. If the integrated pipe gallery contains special pipelines such as sewage and natural gas, the ventilation method of mechanical intake and exhaust must be adopted.

The core product HT for Web independently developed by Hightopo is used to realize the interactive 3D scene of Web ventilation equipment. The screen can be zoomed, panned and rotated, so as to realize the monitoring of the status and mode of fans and dampers in different positions and numbers, which is convenient for management.

Security System

Whether it is at the beginning of the construction of the pipe gallery or when it is put into use, its safety is very important. The security construction of urban integrated pipe gallery mainly includes: environment and equipment monitoring system, video monitoring system, fire protection system, intrusion alarm system, infrared detection alarm, emergency alarm, gas leakage alarm, fire smoke alarm, high temperature warning, special area explosion-proof alarm system , large-screen display system, electronic inspection system and integrated platform management.

Through the HT visualization system, the operating status of various equipment such as temperature and humidity detectors, oxygen sensors, harmful gas and water monitoring, automatic alarm and fire extinguishing is displayed. When the carousel alarm is triggered, it can be monitored in an all-round way without dead ends, and the full-time monitoring is not missed, helping managers to find problems, solve problems in time, and eliminate hidden dangers.

Monitoring System

The monitoring center is the command center that guarantees the maintenance and operation of the integrated pipe gallery. As a component library based on the HTML5 standard, HT can seamlessly integrate various multimedia functions of HTML5, and supports the integration of various video resources to form a unified video stream, which can be used in 2D and 3D. The camera objects are marked on the situation map and associated with their video signal sources, and the corresponding surveillance video can be retrieved through scene interaction to meet the monitoring needs of the operation and maintenance personnel for real-time situational awareness of the scene, historical data retrospective comparison, and emergency response plans.

In traditional video surveillance, multiple sub-shots are tiled on the display in a 2D manner. It is difficult to correspond the sub-shot video to the actual geographical location, and it is impossible to conduct effective and intuitive real-time monitoring of large scenes, and there is no situational awareness. The HT video fusion technology uses WebGL technology to process video images in real time using GPU high-performance computing capabilities. Image processing does not occupy CPU resources, and the picture is smooth.

The integrated pipe gallery monitoring system includes several subsystems, such as: multi-point high-definition video monitoring system for integrated pipe gallery operating conditions, integrated pipe gallery infrared alarm real-time video monitoring system, and integrated pipe gallery equipment monitoring system, etc.

When the temperature of a certain section is too high (higher than 40°C) or the humidity is too high (higher than 90%), the monitoring computer will start the fan in this section to force ventilation and ensure the operation of the power cables in the integrated pipe gallery. capacity and safety of various facilities and staff.

Staff Information

The entry time, departure time, work location, and contact information of each operation and maintenance operator are displayed in real time. If there is an abnormality, the operation and maintenance of the monitoring room can promptly contact the inspection staff in the pipe gallery to quickly evacuate to a safe area. A bluetooth positioning and a small camera are installed in the red safety helmet on each operator's head. In the event of an emergency, the operator presses the distress button on the hat, and the signal and picture will be sent back to the command center in real time.

Drainage system

There are specially designed domestic sewage and rainwater pipelines in the underground comprehensive pipe gallery, as well as professional drainage pipe supporting facilities. When the urban sewage pipes cannot discharge water immediately, the larger space of the underground comprehensive pipe gallery can be used to realize flood discharge immediately. Quickly determine the liquid level through the liquid level detection system, and send the data to the HT monitoring center. If the liquid level is too high, the running status of the pump can be adjusted in real time, which can effectively reduce the maintenance cost of the pipe gallery and improve the efficiency.

When the two special liquid level switches for burst pipe detection in the section simultaneously alarm and the pressure switch on the water pipe alarms when the pressure is low, or when the infrared anti-intrusion device alarms, the PLC will turn on the lighting in the corresponding section.

green energy saving

The two-carbon goal continues to advance, and energy conservation and emission reduction are the key points. Energy saving settings for sensors and smart panels. Among them, the sensor is used as an automatic control induction module, which is embedded in the top of the pipe gallery. It can be set that the infrared sensor controls the light to turn on when someone passes by, and turns off the light within a set time after the person leaves. Manual control equipment such as smart panels can be embedded in the wall and installed at the entrance of the pipe gallery partition, which can realize the combination of automatic control, on-site control and remote control of the duty room.

The intelligent monitoring system of each cabin of the integrated pipe gallery is capable of intelligently detecting the body and operating environment of each cabin. A ring chart is used to dynamically display the energy consumption ratio of each cabin, and the inspection data can be compared and analyzed, so that the high energy consumption in the equipment and operating environment can be found in time, and adjustments can be made in time.

Equipment energy consumption monitoring

Bar charts are used to compare the energy consumption data of ventilation, monitoring, lighting, drainage and security, and store and manage them, identify equipment with high energy consumption and take adjustment measures. The statistics of energy consumption history are convenient for administrators to trace the history of system events and alarms, query statistics, and analyze accidents.

Energy saving and emission reduction assessment

Establish a scientific, complete and unified energy saving and emission reduction statistics, monitoring and assessment system, do a good job in the statistics and monitoring of various energy and pollutant indicators according to regulations, and submit data on time. It is necessary to carry out quality control of various data on energy conservation and emission reduction, strengthen statistical law enforcement inspections and inspections, and ensure the authenticity and accuracy of various data. Strictly investigate and deal with fraudulent behaviors in the energy conservation and emission reduction assessment work. It is strictly forbidden to modify statistical data at will, to prevent false reports and concealment, and to ensure the objectivity, fairness and seriousness of the assessment work.

Summary

The Hightopo 3D visual integrated pipe gallery system abandons the defects of the traditional operation and maintenance management model, and creates a "green pipe gallery supervision, operation and maintenance integration" system. The safe operation and intelligent management and control of urban underground comprehensive pipe gallery mainly integrates environmental monitoring, pipe gallery ontology monitoring, personnel and equipment positioning, intrusion detection security prevention, etc. Comprehensive integration of corridor safety monitoring and monitoring, linkage alarm and control, and the intelligent operation and maintenance and service of comprehensive pipe corridors based on ITSS, to establish a comprehensive evaluation index system for underground pipe corridors for operation and maintenance, cost and management services, and comprehensively assess the safety and health of pipe corridors. , operation and maintenance services, cost and management, and comprehensively build a safe operation and intelligent management and control system for urban underground integrated pipe corridors.

For more industry application examples, please refer to the case link of Tupu Software's official website: https://www.hightopo.com/demos/index.html